Fix feedback divider value approximation

* The rounding algorithm here expects to start with the 2 digits
  after the decimal point in pll->feedbackDivFrac. Multiplying with
  1000 instead of 100 filled it with 3 digits.
  The last step then set the fractional part to zero because it was
  still too large.

src/add-ons/accelerants/radeon_hd/pll.cpp

@@ -374,7 +374,7 @@ pll_compute(pll_info* pll)
 			pll->feedbackDiv = pll->minFeedbackDiv;
 
 		pll->feedbackDivFrac
-			= (1000 * pll->feedbackDivFrac) / pll->referenceFreq;
+			= (100 * pll->feedbackDivFrac) / pll->referenceFreq;
 
 		if (pll->feedbackDivFrac >= 5) {
 			pll->feedbackDivFrac -= 5;